Can someone say me two things...

... First : Why public hack got that much trojans? :

http://img190.imageshack.us/img190/7721/viruses.png

Second : Why it crash after... Ummm... About 20 - 40 minutes playing ?

Those "trojans" are false-positives. It's because the hacks are packed with themida and because the files are programmed to bypass security measures. If you don't even know the logic of how hacks work, I suggest you stay away from any site that deals with in-depth computer programming.

But why it crash alot?

But why care? Just open the game up again? Patience is a virtue my idiotic friend.